Condition

Overwrite behavior

Overwrite only if the existing files are older

When this option is selected, if the files from the folder on
the target machine are older then the one included in the package,
they will be overwritten.

Always overwrite existing files

If this option is enabled, the files from this folder in your
package will overwrite any similar files already present on the target
computer. Usually this can be used when performing a downgrade
(install files older than the ones already installed) or for
non-versioned files which don't overwrite the existing
files.

Do not overwrite existing files

Condition when the folder content will be
preserved. To find out how to use this option in an upgrade scenario,
you can follow the Prevent Repair or Uninstall
article.